07/27/2026
Sure, towns and cities dot the river's edge here and there, but on the whole, you can paddle for hours at a time without so much as a hint of civilization. As the longest river contained entirely within Southern Ontario, the Grand flows south roughly 310 kilometres from its headwaters near Dundalk all the way to Lake Erie. From a barely walkable trickle in the northern highlands to a wide waterway ships can navigate near its mouth, the Grand winds through quiet countryside, forests, and historic communities before entering the Great Lakes at Port Maitland.